Looks like FRSKY_STICKS option was missing in 2.2 (#5177)

radio/src/CMakeLists.txt

@@ -40,6 +40,7 @@ option(TEMPLATES "Model templates menu" OFF)
 option(TRACE_SIMPGMSPACE "Turn on traces in simpgmspace.cpp" ON)
 option(TRACE_LUA_INTERNALS "Turn on traces for Lua internals" OFF)
 option(BINDING_OPTIONS "Allow advanced frsky bindings" OFF)
+option(FRSKY_STICKS "Reverse sticks for FrSky sticks" OFF)
 
 # since we reset all default CMAKE compiler flags for firmware builds, provide an alternate way for user to specify additional flags.
 set(FIRMWARE_C_FLAGS "" CACHE STRING "Additional flags for firmware target c compiler (note: all CMAKE_C_FLAGS[_*] are ignored for firmware/bootloader).")
@@ -331,6 +332,10 @@ if(BINDING_OPTIONS)
   add_definitions(-DBINDING_OPTIONS)
 endif()
 
+if(FRSKY_STICKS)
+  add_definitions(-DFRSKY_STICKS)
+endif()
+
 if(EEPROM_VARIANT_NEEDED)
   add_definitions(-DEEPROM_VARIANT=${EEPROM_VARIANT})
 endif()